CN111978670A - High-glossiness high-toughness polypropylene composite material and preparation method thereof - Google Patents
High-glossiness high-toughness polypropylene composite material and preparation method thereof Download PDFInfo
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- CN111978670A CN111978670A CN201911036986.7A CN201911036986A CN111978670A CN 111978670 A CN111978670 A CN 111978670A CN 201911036986 A CN201911036986 A CN 201911036986A CN 111978670 A CN111978670 A CN 111978670A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/14—Copolymers of propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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Abstract
The invention discloses a high-glossiness high-toughness polypropylene composite material and a preparation method thereof. The polypropylene composite material is composed of the following raw materials in percentage by mass: 20-50% of random copolymerization polypropylene resin; 10-30% of block copolymerization polypropylene; 25-35% of polyethylene; 0.2-0.5% of nucleating agent; 0.4-0.8% of a lubricant; 0.4-0.8% of antioxidant. The polypropylene composite material prepared by the method has the advantages of high glossiness and high toughness, is suitable for the fields of case fabrics and the like with higher requirements on the glossiness and the impact toughness of the material, can greatly improve the surface effect and the falling resistance of a workpiece, and is simple in preparation process, low in cost and easy for large-scale industrial production.
Description
Technical Field
The invention belongs to the field of high polymer materials, and particularly relates to a high-glossiness high-toughness polypropylene composite material and a preparation method thereof.
Background
The polypropylene is a semi-crystalline thermoplastic plastic, has higher impact resistance, strong mechanical property and corrosion resistance to various organic solvents and acid and alkali, meanwhile, the polypropylene resin has the characteristics of low density, high strength, easy recovery and the like, is one of the most common high polymer materials, is a resin material formed on the basis of a polypropylene matrix, is a crystalline polymer with a regular structure, is a light milky granule, tasteless, nontoxic and light thermoplastic resin, is also the lightest of general resins, has good mechanical property, good heat resistance and good chemical stability, can resist acid, alkali and organic solvent, does not react with most chemicals (such as fuming nitric acid, chromic acid solution, halogen, benzene, carbon tetrachloride, chloroform and the like), and hardly absorbs water, and is widely applied to various fields of automobiles, household appliances, home furnishing, packaging, building materials and the like.
However, compared with other resin plastics such as ABS and HIPS, polypropylene has not only low rigidity and large shrinkage, but also significantly low gloss, which significantly limits the application of polypropylene resin materials in products with high requirements for gloss, such as housings of electric appliances, stationery, and household products. The existing polypropylene materials are generally divided into three types of homopolymerization, random copolymerization and block copolymerization, wherein the random copolymerization type and block copolymerization type materials are generally products obtained by copolymerizing propylene with alpha-olefin monomers such as ethylene, butylene and the like, and the gloss of the block copolymerization type polypropylene is lower from about 70 to below 30 along with the increase of the ethylene content from the test condition of common products; the gloss of the homo-polypropylene and random copolymer polypropylene materials is somewhat desirable, usually 80-90, but the impact resistance is typically 5kJ/m2The following defects of poor impact resistance obviously exist, and the use requirements of various application fields such as bags, home appliances and the like cannot be met. At present, the high-gloss PP is modified and prepared at home and abroad mainly by adding inorganic fillers such as BaSO4 and the like into PP resin, so that the glossiness of a polypropylene material is improved to a certain extent, but the density of the polypropylene product is greatly improved, the color appearance, the sanitation, the application cost and the like of the product are also influenced by the modified material and the processing process, Therefore, the development of the high-gloss polypropylene material has positive significance for further improving the application field of the polypropylene resin.
Disclosure of Invention
The invention overcomes the defects in the prior art, provides the high-glossiness and high-toughness polypropylene composite material, has the characteristics of high glossiness and high impact toughness, is suitable for producing products such as case fabrics, household appliance panels and the like, can realize higher impact toughness and lower density under the condition of higher glossiness compared with the traditional polypropylene material, improves the surface effect of a workpiece, is durable, has simple preparation process and lower cost, and is easy to carry out large-scale industrial production. The technical scheme adopted by the invention is as follows:
the detailed formula of the raw materials comprises the following components in percentage by mass:
20-50% of random copolymer polypropylene;
10-30% of block copolymerization polypropylene
25-35% of polyethylene
0.2 to 0.5 percent of nucleating agent
1 to 5 percent of brightener
0.4 to 0.8 percent of lubricant
0.4-0.8% of antioxidant.
1. The random copolymerization polypropylene has high glossiness, the melt mass flow rate is 10-20 g/10min, and the cantilever beam notch impact strength is 5-10 KJ/m2。
2. The mass flow rate of the block copolymerization polypropylene melt is 15-25 g/10min, and the notched impact strength of the cantilever beam is 20-30 KJ/m 2。
3. The polyethylene is high-density polyethylene, the melt mass flow rate is 6-15 g/10min, and the tensile fracture nominal stress is more than or equal to 80%.
4. The nucleating agent is one or two of sorbitol nucleating agent and phosphate nucleating agent.
5. The brightener is polypropylene wax.
6. The lubricant is one or more of PE wax, silicone powder and EBS.
7. The antioxidant is prepared by compounding hindered phenol antioxidant and phosphite antioxidant in a ratio of 1: 2.
8. The preparation process comprises the following steps: adding the random copolymer polypropylene, the block copolymer polypropylene, the polyethylene, the nucleating agent, the brightening agent, the lubricant and the antioxidant into a high-speed stirrer in proportion, uniformly mixing, adding into a double-screw extruder from a main feed, performing melt mixing extrusion, bracing, water cooling and granulating to obtain the high-gloss and high-toughness polypropylene composite material, wherein the processing temperature is 190-210 ℃.
8. The invention has the beneficial effects that:
(1) the prepared luggage fabric, the household appliance shell and the like have high glossiness and high impact toughness, and compared with the traditional material, the surface effect and the durability are better, the defect that the glossiness and the impact resistance of the traditional polypropylene material cannot be simultaneously met is overcome, and (2) the preparation process is simple, the cost is lower, and the large-scale industrial production is easy to carry out.
Detailed Description
The polypropylene composite material with high glossiness and high impact toughness comprises the following components in percentage by mass:
20-50% of random copolymer polypropylene;
10-30% of block copolymerization polypropylene
25-35% of polyethylene
0.2 to 0.5 percent of nucleating agent
1 to 5 percent of brightener
0.4 to 0.8 percent of lubricant
0.4-0.8% of antioxidant.
1. Preferably, the random copolymerization polypropylene has high glossiness, the melt mass flow rate is 10-20 g/10min, and the notched izod impact strength is 5-10 KJ/m2More preferably, the raw material is Liandrebassel polypropylene, the melt mass flow rate is 11g/10min, and the notched izod impact strength is 7KJ/m2
2. Preferably, the mass flow rate of the block copolymerization polypropylene melt is 20-35 g/10min, and the notched impact strength of a cantilever beam is 10-30 KJ/m2Further preferably a Beijing Yanshan petrochemical polypropylene raw material K7726H, the melt mass flow rate is 26g/10min, and the suspensionThe impact strength of the notch of the beam is 12KJ/m2
3. Preferably, the polyethylene is high-density polyethylene, the melt mass flow rate is 6-15 g/10min, the tensile fracture nominal standard is not less than 80%, further preferably, the smooth petrochemical high-density polyethylene material 7260 is further preferred, the melt mass flow rate is 8g/10min, and the tensile fracture nominal standard is not less than 110%;
4. Preferably, the nucleating agent is a sorbitol nucleating agent or a phosphate nucleating agent;
5. preferably, the brightening agent is polypropylene wax;
6. preferably, the lubricant is one or more of PE wax, silicone powder and EBS;
7. preferably, the antioxidant is prepared by compounding a hindered phenol antioxidant and a phosphite antioxidant according to the proportion of 1:2, and further preferably, the hindered phenol antioxidant and the phosphite antioxidant are 1010 and 168 of basf respectively;
8. preferably, after random copolymerization polypropylene, block copolymerization polypropylene, polyethylene, nucleating agent, brightening agent, lubricating agent and antioxidant are added into a high-speed stirrer in proportion and uniformly mixed, the mixture is added into a double-screw extruder from a main feed, and after melt mixing extrusion and bracing water-cooling granulation, the high-gloss and high-toughness polypropylene composite material is obtained, wherein the processing temperature is 190-210 ℃.
The present invention will be further described with reference to specific examples.
The formulation compositions of the examples and comparative examples are shown in Table 1
TABLE 1 formulation composition (in mass%) of examples and comparative examples
| Raw materials | Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 |
| Random copolymerized polypropylene | 20.5 | 30.5 | 30.5 | 53.9 | |
| Block copolymerized polypropylene | 51.4 | 41.4 | 33.4 | 10 | 63.9 |
| Polyethylene | 25 | 25 | 33 | 33 | 33 |
| Brightening agent | 2 | 2 | 2 | 2 | 2 |
| LubricationAgent for treating cancer | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 |
| Antioxidant agent | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
The lubricant used in table 1 was PE wax, the antioxidant used was 1010 and 168, the ratio was 1: 2.
The raw materials are weighed according to the proportion, added into a high-speed stirrer and uniformly mixed, added into a double-screw extruder from a main feed, subjected to melt mixing extrusion and bracing water-cooling granulation to obtain the high-gloss high-impact-toughness polypropylene composite material, and the processing temperature is 190-205 ℃.
The composite materials obtained after processing were tested by the test standards shown in table two, and table 3 shows the test results of the corresponding examples and comparative examples.
| Detecting items | Unit of | Test standard |
| Impact strength of simply supported beam notch | KJ/cm2 | ISO 179-1 |
| Tensile strength | Mpa | ISO527-2 |
| Nominal strain at break | % | ISO527-2 |
| Bending strength | Mpa | ISO 178 |
| Fuse finger | g/10min | ISO 1133 |
| Shrinkage rate | % | ISO 2577 |
| Degree of gloss | GB/T 8807-1988 |
As can be seen from Table 3, the comparative example 1 shows that the impact toughness of the material is higher, but the glossiness is reduced more, which is shown in that the surface of the product is fogged and not bright enough, and the mirror surface effect is not good, and the examples 1-4 show that the impact toughness of the material is reduced slightly with the increase of the content of the random copolymerization polypropylene material, but the glossiness is improved obviously, and the product is bright and has the mirror surface effect, so that the random copolymerization polypropylene material is very suitable for being used as the shell material of bags, home appliances and the like.
It should be understood by those skilled in the art that various changes and modifications can be made to the above embodiments without departing from the scope of the present invention, and any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention are within the scope of the present invention.
Claims (9)
1. A high-glossiness high-toughness polypropylene composite material is characterized in that: the material is composed of the following raw materials by mass percent:
20-50% of random copolymer polypropylene;
10-30% of block copolymerization polypropylene
25-35% of polyethylene
0.2 to 0.5 percent of nucleating agent
1 to 5 percent of brightener
0.4 to 0.8 percent of lubricant
0.4-0.8% of antioxidant.
2. A high gloss, high toughness polypropylene composite according to claim 1 wherein: the random copolymerization polypropylene has high glossiness, the melt mass flow rate is 10-20 g/10min, and the cantilever beam notch impact strength is 5-10 KJ/m2。
3. A high gloss, high toughness polypropylene composite according to claim 1 wherein: the mass flow rate of the block copolymerization polypropylene melt is 15-25 g/10min, and the notched impact strength of a cantilever beam is 20-30 KJ/m 2。
4. A high gloss, high toughness polypropylene composite according to claim 1 wherein: the polyethylene is high-density polyethylene, the melt mass flow rate is 6-15 g/10min, and the tensile fracture nominal stress is more than or equal to 80%.
5. A high gloss, high toughness polypropylene composite according to claim 1 wherein: the nucleating agent is one or two of sorbitol nucleating agent and phosphate nucleating agent.
6. A high gloss, high toughness polypropylene composite according to claim 1 wherein: the brightener is polypropylene wax.
7. A high gloss, high toughness polypropylene composite according to claim 1 wherein: the lubricant is one or more of PE wax, silicone powder and EBS.
8. A high gloss, high toughness polypropylene composite according to claim 1 wherein: the antioxidant is prepared by compounding hindered phenol antioxidant and phosphite antioxidant according to the proportion of 1: 2.
9. A high gloss, high toughness polypropylene composite according to any one of claims 1 to 8 wherein: the preparation method comprises the following preparation processes: adding the random copolymer polypropylene, the block copolymer polypropylene, the polyethylene, the nucleating agent, the brightening agent, the lubricant and the antioxidant into a high-speed stirrer in proportion, uniformly mixing, adding into a double-screw extruder from a main feed, performing melt mixing extrusion, bracing, water cooling and granulating to obtain the high-gloss and high-toughness polypropylene composite material, wherein the processing temperature is 190-210 ℃.
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| CN201911036986.7A CN111978670A (en) | 2019-10-29 | 2019-10-29 | High-glossiness high-toughness polypropylene composite material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484700A (en) * | 2019-12-20 | 2020-08-04 | 四川鑫达企业集团有限公司 | High-glossiness high-toughness polypropylene composite material and preparation method thereof |
| CN112625360A (en) * | 2020-12-15 | 2021-04-09 | 上海普利特复合材料股份有限公司 | Polypropylene material for injection-molded cold-resistant automobile washing kettle and preparation method thereof |
| CN112625348A (en) * | 2020-12-15 | 2021-04-09 | 江苏金发科技新材料有限公司 | Polypropylene composite material for new energy automobile exterior trim and preparation method thereof |
| CN114507399A (en) * | 2022-03-24 | 2022-05-17 | 成都金发科技新材料有限公司 | Polypropylene material and preparation method and application thereof |
-
2019
- 2019-10-29 CN CN201911036986.7A patent/CN111978670A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111484700A (en) * | 2019-12-20 | 2020-08-04 | 四川鑫达企业集团有限公司 | High-glossiness high-toughness polypropylene composite material and preparation method thereof |
| CN112625360A (en) * | 2020-12-15 | 2021-04-09 | 上海普利特复合材料股份有限公司 | Polypropylene material for injection-molded cold-resistant automobile washing kettle and preparation method thereof |
| CN112625348A (en) * | 2020-12-15 | 2021-04-09 | 江苏金发科技新材料有限公司 | Polypropylene composite material for new energy automobile exterior trim and preparation method thereof |
| CN114507399A (en) * | 2022-03-24 | 2022-05-17 | 成都金发科技新材料有限公司 | Polypropylene material and preparation method and application thereof |
| CN114507399B (en) * | 2022-03-24 | 2023-08-08 | 成都金发科技新材料有限公司 | Polypropylene material and preparation method and application thereof |
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